Cosel LEB225F User manual

Brand: Cosel

Model: LEB225F

Type: User manual

This manual is also suitable for

LEB-8

*1 The value of input current is at ACIN 100V and rated load at LEBOF-0524.

input fuse

250V 8A

250V 6.3A

250V 5A

Rated

Basic Characteristics Data

LEB225F

LEB150F

LEB100F

Model

90 - 500

Forward converter

Flyback converter

Active filter

3.0

120

90 - 500

frequency

Switching

Circuit method

Forward converter

Flyback converter

Active filter

Flyback converter

Active filter

[A]

2.0

1.4

current

Input

130

120

operation availability

Series/Parallel

Parallel

operation

SCR CEM-3 Yes No

PCB/Pattern

Thermistor

current

protection

Inrush

CEM-3

Material

Double

sided

Yes

sided

Single

Series

operation

[kHz]

Basic Characteristics Data

AC-DC Power Supplies Open Frame/ Enclosed Type

2 Assembling and Installation Method LEB-11

2.1 Installation method LEB-11

2.2 Derating LEB-11

2.3 Mounting screw LEB-13

1.1 Input voltage range LEB-10

1.2 Inrush current limiting LEB-10

1.3 Overcurrent protection LEB-10

1.4 Peakcurrent protection LEB-10

1.5 Thermal protection LEB-10

1.6 Overvoltage protection LEB-10

1.7 Output voltage adjustment range LEB-11

1.8 Isolation LEB-11

5.1 Outline of option LEB-13

5.2 Others LEB-14

Instruction Manual

5 Option and others LEB-13

4 Peak loading LEB-13

1 Function LEB-10

3Ground LEB-13

LEB-9

1 Function

1.1 Input voltage range

¡The range is from AC85V to AC264V or DC120V to DC370V.

¡In cases that conform with safety standard, input voltage range is

AC100-AC240V(50/60Hz).

¡AC input voltage must have a range from AC85V to AC264V for

normal operation. If the wrong input is applied, the unit will not op-

erate properly and/or may be damaged.

1.2 Inrush current limiting

¡Inrush current limiting is built-in.

¡If a switch on the input side is installed, it has to be the one han-

dling the input inrush current.

¿LEB100F

LEB150F

¡The thermistor is used for protection from inrush current. When

power is turned ON/OFF repeatedly within a short period of time, it

is necessary to have enough time for power supply to cool down.

¿LEB225F

¡The thyristor technique is used for protection from inrush current.

When power is turned ON/OFF repeatedly within a short period of

time, it is necessary to have enough time between power ON and

OFF to operate resistance circuit for inrush current.

1.3 Overcurrent protection

¡Overcurrent protection is built-in and comes into effect over 105%

of the rated current in V1 and at over 101% of the peak current in

V2.Overcurrent protection prevents the unit from short circuit and

overcurrent condition.



The unit automatically recovers when the fault condition is cleared.

¿Foldback characteristics (V1)

¡The power supply witch has a current foldback characteristics may

not start up when connected to nonlinear load such as a lamp,

motor constant current load. See the characteristics below.

Note: In case of nonlinear load, the output is locked out at A point.

: Load characteristics of power supply.

: Characteristics of load (lamp, motor, constant current load, etc.).

100

Load factor [%]

Output Voltage

¿Hiccup current characteristics (V2)

¡When the output voltage drops more than 50% of the rated output

voltage value at overcurrent, the average output current is re-

duced by hiccup operation of power supply.

1.4 Peakcurrent protection (V2)

¿LEB100F

LEB150F

¡Peakcurrent protection is built-in (refer to Instruction Manual 4. for

Peak loading).

If this function comes into effect, the output V2 is shut down (but

output V1 is not shut down).

The minimum interval of AC recycling for recovery is 2 to 3 min-

utes ().

 The recovery time varies depending on input voltage and load

condition.

1.5 Thermal protection (V2)

¿LEB225F

¡Thermal protection is built-in. If the power supply is operated un-

der the following conditions, this function comes into effect and the

output V2 is shut down (but output V1 is not shut down).

1Over rated temperature

2Poor ventilation

3Over peak load based on Instruction Manual 4. for Peak loading

¡If this function is in operation, turn off power, eliminate all possible

causes of overheating, and drop the temperature to normal level.

Output voltage recovers after applying input voltage.

1.6 Overvoltage protection

¡Output V1

Overvoltage protection circuit, clamping the output voltage by

zener diode, is built-in and comes into effect at over 115% of the

rated voltage. The unit in an overvoltage protection mode cannot

be recovered by a user; it must be repaired at the factory.

Overvoltage protection (diode) also comes into effect if the voltage

is externally applied to the output side.

Avoid applying voltage to the output side.

¡Output V2

Overvoltage protection is built-in and comes into effect at 115-

140% of the rated voltage.

The AC input should be shut down if overvoltage protection is in

operation.

The minimum interval of AC recycling for recovery is 2 to 3 min-

utes ().

 The recovery time varies depending on input voltage.

AC-DC Power Supplies Open Frame/ Enclosed Type

Instruction Manual

LEB-10

Remarks:

Please avoid applying the over-rated voltage to the output termi-

nal. Power supply may operate incorrectly or fail.In case of oper-

ating a motor etc. , please install an external diode on the output

terminal to protect the unit.

Note:

Overvoltage protection is built-in each output.

If overvoltage protection in V1 or V2 comes into effect, both of out-

put V1 and V2 are not shut down.

Each overvoltage protection is independent of each other.

1.7 Output voltage adjustment range

¡Adjustment of output voltage is possible by using potentiometer

(only available V1 output).

¡Output voltage is increased by turning potentiometer clockwise

and is decreased by turning potentiometer counterclockwise.

1.8 Isolation

¡For a receiving inspection, such as Hi-Pot test gradually increase

(decrease) the voltage for the start (shut down).

Avoid using Hi-Pot tester with the timer because it may generate

voltage a few times higher than the applied voltage, at ON/OFF of

a timer.

If the unit is tested on the isolation between input & output and

output & FG, remote ON/OFF (option) must be shorted to outputs.

d2=5mm min

CN1

2.2 Derating

In the hatched area the specication of Ripple, Ripple Noise is dif-

ferent from other area.

In case2, ventilation must keep the temperature of C119 below

85C. See External View for the location of C119.

The operative ambient temperature is different by with/without

case cover or mounting position.

Please refer to drawings as below.

 

Please be careful of electric shock or earth leakage in case of

temperature measurement, because C119 is live potential.

¿LEB100F

1Convection

Forced air (0.5m

/min)

Load factor [%]

Ambient temperature [C]

-10 0 10 20 30 40 50 60 70

100

1(D), (E), (F) mounting

1(B), (C) mounting

1(A) mounting

¿LEB100F-£-SN (requirement: Min. AC90V)

1Convection

2Forced air (0.5m3/min)

Load factor [%]

Ambient temperature [C]

-10 0 10 20 30 40 50 60 70

100

1(D), (E) mounting

1(B), (C) mounting

1(A) mounting

¿LEB150F

Load factor [%]

Ambient temperature [C]

-10 0 10 20 30 40 50 60 70

100

1(D), (E), (F) mounting

1(B), (C) mounting

1(A) mounting

1Convection

2Forced air (0.5m3/min)

2.1 Installation method

When two or more power supplies are used side by side, position

them with proper intervals to allow enough air ventilation. Ambi-

ent temperature around each power supply should not exceed the

temperature range shown in derating curve.

In case of metal chassis, keep the distance between d1 and d2

for to insulate between lead of component and metal chassis. If ti

is less than d1 and d2, insert the insulation sheet between power

supply and metal chassis.

d1=8mm min

CN1

2 Assembling and

Installation Method

AC-DC Power Supplies Open Frame/ Enclosed Type

Instruction Manual

LEB-11

¿LEB150F-O-SN (requirement: Min. AC90V)

Load factor [%]

Ambient temperature [C]

-10 0 10 20 30 40 50 60 70

100

1Convection

1(D), (E) mounting

1(B), (C) mounting

1(A) mounting

2Forced air (0.5m3/min)

¿LEB225F

Load factor [%]

Ambient temperature [C]

-10 0 10 20 30 40 50 60 70

100

1(D), (E), (F) mounting

1(B), (C) mounting

(A) mounting

1Convection

2Forced air (0.5m3/min)

¿LEB225F-O-SN (requirement: Min. AC90V)

Load factor [%]

Ambient temperature [C]

-10 0 10 20 30 40 50 60 70

100

1Convection

1(D), (E) mounting

1(B), (C) mounting

1(A) mounting

2Forced air (0.5m3/min)

Option ”-SN” is easy to be full of heat air inside power supply. The

ventilation design with derating or forced air is recommended.

When unit mounted except below drawings, it is required to con-

sider ventilated environment by forced air cooling for temperature

/ load derating. For details, please consult our sales or engineer-

ing departments.

(F) mounting is not possible when unit is with case cover, but if

need to operate unit by (F) positioning with case cover, tempera-

ture / load derating is necessary. For more details, please consult

our sales or engineering department.

Standard

Position

CN1

(A) (B) (C)

CN1

(D) (E) (F)

CN1

¡Denition of load factor

A1=Io1/I1×100 A2=Io2/I2×100

A3= (V1×Io1+V2×Io2) / (TOTAL OUTPUT WATTAGE) ×100

where:

V1:VOLTAGE OF OUTPUT V1, Io1:CURRENT OF OUTPUT V1,

I1: RATED CURRENT OF OUTPUT V1

V2:VOLTAGE OF OUTPUT V2, Io2:CURRENT OF OUTPUT V2,

I2:RATED CURRENT OF OUTPUT V2

NOTE:

Refer to SPECIFICATION for TOTAL OUTPUT WATTAGE and

OTHERS

Load factor[%]=Maximum value in A1, A2, A3

[ex.1] The method which seeks for the upper limit of ambient tem-

perature in LEB100F-0524 as following conditions,

Load condition:V1=5V, Io1=0.2A V2=24V, Io2=2A

Installation: standard potion and conventional cooling

Load factor [%]

Ambient temperature [C]

LEB100F derating curve

(standard potion and convention)

-10 0 10 20 30 40 50 60 70

100

Calculating A1, A2, A3

A1=Io1/I1×100=0.2/5×100=4

A2=Io2/I2×100 = 2/4×100 =50

A3=(V1×Io1+V2×Io2)/(TOTAL OUTPUT WATTAGE)×100

=(5×0.2+24×2)/100×100=49

Accordingly load factor is 50[%] which is maximum value in A1, A2,

A3 and the upper limit of ambient temperature is 60C by derating

curve.

AC-DC Power Supplies Open Frame/ Enclosed Type

Instruction Manual

LEB-12

When installing the power supply with your unit, ensure that the

input FG terminal of CN1 or mounting hole FG is connected to

safety ground of the unit.

However when applying the safety agency, connect the input FG

terminal of CN1 to safety ground of the unit.

CN1

Mounting

hole

4 Peak loading

¡Peak load (V2) is possible to draw as below.

Output current [A]

t1 t[sec]

Ip: peak current

t1 [ 10 [sec], Iave = [rated current, [ 0.35

Iave : average current

Ip t1 + I0 t2

t1 + t2

5 Option and others

5.1 Outline of option

¿-G

Option ”-G” means leakage current is smaller than standard model

by reducing the value of earth capacitor at input lter circuit.

Leakage current 0.1mA max

Conducted noise Not available

[ex.2] The method which seeks for the upper limit of V2 output cur-

rent as Io2 in LEB100F-0524 as following conditions,

Load condition:V1=5V,Io1=4A V2=24V

Ambient temperature: 50C

Installation: standard potion and conventional cooling

Load factor is 100[%] at ambient temperature=50C by

derating curve, In this case the value of each A1, A2, A3 is

required less than 100[%].

100

] A1= Io1/I1×100 100 ] A2=Io2/I2×100

100

]

A3=(V1×Io1+V2×Io2)/(TOTAL OUTPUT WATTAGE)×100

100

] 4/5×100 100 ] Io2/4×100

100

] (5×4+24×Io2)/100×100

according Io2 [ 3.3A and as a result the upper limit of V2 out-

put current as I2 is less than 3.3A.

2.3 Mounting screw

The mounting screw should be M3. The hatched area shows the

allowance of metal parts for mounting.

Please be carefull with that metal parts do not touch mounted

parts at front side, where major components are mounted, when a

power supply is installed with them.

Keep isolation distance between screw and internal components

in case of option ”-S”, ”-SN” as below chart.

9mm

1FG

2

CN1

9mm

9mm 9mm

9mm

9mm 9mm

9mm

1 Recommendation to electrically connect FG to metal chassis

for reducing noise.

2 LEB150F and LEB225F only

 Refer to External view for location

Unit

Chassis

Mounting screw

8mm max

3 Ground

AC-DC Power Supplies Open Frame/ Enclosed Type

Instruction Manual

LEB-13

¿-R

Option ”-R” means output remote ON/OFF (V2) is made possible.

 Remote ON/OFF circuit (RC(+), RC(-)) is isolated from input

and FG but not isolated from output V1.

Please consult our sales or engineering departments in other application.

A wrong connection may damage the internal components of the

unit.

Between RC (+) and RC (-) Output (V2)

SW ON ( 0 - 0.5V) ON

SW OFF (at shipping) (4.5 - 5.5V) OFF

RC(+)

CN3

RC(-)

or or

10mA max

Relay Transistor

Connector for remote

ON/OFF(V2) (option)

Connecting example

¿-S ∙ -SN

¡Option ”-S” means chassis is attached to standard model.

Option ”-SN” means chassis and cover is attached to standard

model. Refer to 2.2 Derating for derating curve.

¿-T

Option ”-T” means input and output interface are changed ”Con-

nector” to ”Terminal block”.

AC(N)

AC (L)

¿-Z O

Option ”-Z O ” means ZT3 series in COSEL is mounted on stan-

dard model.

Refer to external view for output terminal.

Refer to COSEL catalog about ZT specication in detail.

It is possible to select ZT as below chart.

Optional symbol -Z31 -Z32 -Z33 -Z34 -Z35

Mounted Power supply

ZTS3

2405

ZTS3

2412

ZTS3

2415

ZTW3

2412

ZTW3

2415

Notice V2=24[V], 30[V], 36[V] model

Optional symbol -Z21 -Z22 -Z23 -Z24 -Z25

Mounted Power supply

ZTS3

1205

ZTS3

1212

ZTS3

1215

ZTW3

1212

ZTW3

1215

Notice V2=12[V] model

5.2 Others

This power supply is the rugged PCB type. Do not drop conduc-

tive objects in the power supply.

At light load, there remains high voltage inside the power supply

for a few minutes after power OFF.

So, at maintenance, take care about electric shock.

This power supply is manufactured by SMD technology. The

stress to PCB like twisting or bending causes the defect of the

unit, so handle the unit with care.

AC-DC Power Supplies Open Frame/ Enclosed Type

Instruction Manual

LEB-14

Cosel LEB225F User manual

Brand: Cosel

Model: LEB225F

Type: User manual

This manual is also suitable for

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Cosel LEB225F User manual

This manual is also suitable for

Cosel LEB225F User manual

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